Well obviously dice are sinful, because they're made from platonic solids and that Plato guy was a pagan. Maybe those cylindrical ones are ok, though.
This brought to mind the fact that in Japan, cards were considered to be the more pernicious influence on gambling, which eventually led to a card deck that was pessimized for gambling[0]. Of course, people can gamble on anything they can play, so it didn't exactly work.